<!--
 * @Date: 2023-04-23 16:37:12
 * @LastEditors: wkl
 * @LastEditTime: 2023-04-23 16:38:28
 * @FilePath: /demo/demoA.html
-->
A
<iframe src="http://127.0.0.1:5500/demoB.html" frameborder="0" width="500" height="500"></iframe>